Gluing procedures

Several types of gap-filling rubber-based impact glues are available for hand gluing, which only require moderate pressure as they give a powerful and immediate tack. They set by evaporation or absorption of the spirit solvent, and do not attain maximum strength for at least 14 days. An advantage of this type is that they retain a certain measure of elasticity, and will thus withstand fractional movements of the base. They are, however, only heat resistant to about 140° F (60° C) and although damp proof will not stand continuous moist conditions.

In using this type of adhesive over large areas speed is essential. The groundwork/substrate must be perfectly level, dust free and free from grease, etc., while spreading with gauged metal spreader, wooden squeegee or roller should be reasonably full and even, with both surfaces coated and allowed to air dry until the glue is tacky and no longer moist. The coated sheet must be carefully positioned, dropped into place, rolled or banged down with the clenched fist to expel any trapped air, and if pre-cut to exact size then a useful precaution is to tack temporary battens to the groundwork, and use these as locating shoulders. Any spilled glue should be cleaned off with a suitable solvent— petrol, cellulose thinners, etc.—or allowed to tack off and be rolled up with the finger-tips, while rollers should be cleaned immediately. If any edge tends to lift it should be clamped down, and the assembly left for some hours before further working.

Plastic laminates can be glued with gap-filling synthetic resin glues, and this is the standard production method, although clamping pressures are necessary. One of the best glues for this purpose is Aerolite 306 with GUX hardener in which a proportion of glycerine has been added to the hardener to impart a measure of flexibility. Application is the same as for wood veneering (Chapter 32), but hot pressing should not exceed 160° F (71° C) with pressures only sufficient to bring both surfaces into intimate contact, and not exceeding 40 lb per sq. in (2.812 gf/cm2). This method is preferable to hand gluing with impact glues which are more suitable for on-site work, for with clamping pressures the surface will be flatter, and the glue film will be both heat and damp resistant within the limits set by the laminate itself and the groundwork/substrate.

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Woodworking Tools and Installation Tips

Woodworking Tools and Installation Tips

There are a lot of things that either needs to be repaired, or put together when youre a homeowner. If youre a new homeowner, and have just gotten out of apartment style living, you might want to take this list with you to the hardware store. From remolding jobs to putting together furniture you can use these 5 power tools to get your stuff together. Dont forget too that youll need a few extra tools for other jobs around the house.

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